v3.8.0

What's Changed

• chore: drops support for Python 3.9 (end of life)
• fix(client): HTTP headers concatenated by dashes instead of snakecase by @hassiebp in https://github.com/langfuse/langfuse-python/pull/1404
• feat(langchain): add v1 support by @hassiebp in https://github.com/langfuse/langfuse-python/pull/1411

Full Changelog: https://github.com/langfuse/langfuse-python/compare/v3.7.0...v3.8.0